The utility model discloses an air cushion bag, which not only comprises a bag body, a handle, a zipper and a strap, but also comprises an air cushion structure, wherein the air cushion structure is located below the bottom surface of the bag body and comprises a cylindrical air bag and a valve; A plurality of cylindrical airbags are made of plastic materials and arranged in parallel to form a plane with the same size as the bottom surface; A plurality of cylindrical air bags are communicated with each other through small holes; The valve is located at the edge of the cylindrical airbag. The utility model has simple structure. When in use, the cylindrical airbag is inflated through the valve to form an air cushion structure, and a buffer layer is formed between the bottom surface and the ground, which not only protects the bottom plate, but also does not increase the weight and complexity, and has strong applicability.